Cork-shell-cutting machine



(No Model.)

A. L. MITCHELL. (JORK SHELL CUTTING MACHINE.

N0. 520,605. Patented May 29, 1894.

UNITED STATES PATENT OFFICE.

ADOLPH L. MITCHELL, OF ROCKVILLE CENTRE, NEWV YORK.

CORK-SHELL-CUTTING MACHINE.

SPECIFICATION formingpart of Letters Patent No. 520,605, dated May 29,1894.

Application filed May 11, 1893.

To all whom it may concern.-

Be it known that I, ADOLPH L. MITCHELL, a citizen of the United States,and a resident of Rockville Centre, Queens county, New York, haveinvented new and useful Improve ments in Cork Shell- Cutting Machines,of which the following is a specification.

My invention consists of improved apparatus for cutting cork shells,that is, hollow corks, both inside and outside, with one chucking of thecork blank, and at one operation of the machine, whereby the work may beaccomplished more rapidly and cheaper, and the shells may be cut moreaccurately than as carried out at the present time by separateoperations with resetting of the blank at the second operation, ashereinafter fully described, reference being made to the accompanyingdrawings, in which- Figure 1, is a side elevation of my improvedcork-shell-cutting machine with some of the parts in longitudinalsection. Fig. 2, is a plan view. Figs. 3,4 and 5 are detailsin sectionand on an enlarged scale, illustrating the operation of the machine.

In this example of my invention I represent the cutters as mountedhorizontally on a horizontal bench, as the bed-frame of a lathe, butthey may be mounted on a vertical standard as the standard of a drillpress or boring machine, and I propose to avail myself of eitherarrangement as preferred.

61., represents the bed-frame, b and a, sliding stocks therein; f, andg, rotating hollow mandrels carried in the stocks, respectively, andeach having a pulley h, to be driven by a belt from a counter-shaft torotate the mandrels.

II w V i The mandrel f, carries a thin hollow cutter t of small size, inthe'chuck j, attached to its end fronting the other mandrel, which alsocarries a like but larger cutter 7c, in the chuck Z, attached to its endfronting mandrel f. In this mandrel there is also a rod wt, preferablyof wood, and of greater length so as to proj ect at each end, andcapable of sliding lengthwise in the mandrel. At the tail end of saidmandrel g, is a friction clamp consisting of the tube n, through whichthe rod m, extends and the spring 0, bearing at its ends on the rod,said spring and tube being carried in the standard 19, supported on anarm q, extend- Serial No. 473,875. (No model.)

ing from the tail end of stock a, a temper screw 5, is arranged in thestandard p, with suitable relation to the spring for graduating thepressure of the spring on the rod m, according to the requiredfrictional resistance to be produced on the rod; tube n, is notched inthe side at t, for contact of the ends of the spring with the rod butthe spring may reach beyond the ends of the tube.

Back of the standard 19, is another standard u, supported on a fixed armv, projecting from the end ofthe bed-frame, a, which standard extends asuitable distance above the axis of the rod m, forastop to limit theback movement of the rod so that back movement of the stock 0, beingcontinued after the rod has been stopped by said standard, u, will causethe mandrel to be shifted backward along the rod, and cause the rod toproject forward of the cutting end of the cutter is, the friction clampbeing thus made to slide along the'rod. The rod 0%, has a collar to, onthe end, next to the standard a, and there is a hook catch 00, fitted onthe standard suitably to slide downward and engage the rod by thecollar, to hold it while the stock 0 may be shifted forward to projectthe cutter k, be-

yond the other end of the rod where it may be sharpened with a file orstone without obstruction by the rod. In this case the hook catch a: maybe supposed to project from a slot in the standard in which it can beshifted downward by the attendant to engage the rod m, but it is obviousthat it may be arranged in various ways for the purpose. Between the twocutters is a standard at, supporting a disk 1 against the face of which,and fronting cutter is, the cork slab, from which the shells Z, Fig. 4,are to be out, is placed and held by the attendant as indicated by thedotted line 2, Fig. 1; the cork slab is represented in full lines at .2,Figs. 3, 4 and 5; rod m, is then shifted forward and made to pressagainst the cork so as to hold it more firmly, then cutter i, is made tomove forward through the bore of the die, and cut out' the core n, fromthe shell, against the end of rod m, and then retire taking the corewithin its bore; then cutter 7c, is made to move forward and cut theexterior of the shell from the slab, and then retire when the shell isejected from it by the rod m. The cores, retained. in the cutter t, areejected from it into the hollow mandrel by other following cores, and inlike manner expelled from the mandrel f. Various contrivances ofapparatus may be employed for effecting these movements of the pressurerod m, and the cutters and I will avail myself of any suitable orpreferred means. WVhat I have represented in this case as one example ofwhat may be employed consists of the foot treadle ct, pivoted on thefloor at b, and connected by rod 0', with the bell cranks d, and rod 6',with a rigid arm e of the stock 0, to shift the stock forward bypressing the treadle down, with a coiled spring f to effect the reversemovement of said stock, and to actuate the stock b, by the same treadle,a pushing bar g is arranged in a vertical slot of said arm 6 with ashoulder 72/ of the under side normally bearing against the surface ofthe arm below the slot, said rod being pivoted to one end of rock lever11 having a fulcrum at j, and at its other end connected with a rod is,projecting from stock f, all so that at the same time that cutter 7c ismoved forward cutter i will also be moved forward. The cutters arerepresented in the drawings in the most distant positions of theirbackward movements, in which it will be noticed that cutter is has agreater distance to move in doing its work than cutter t'has, hence bothstarting at the same time and moving at the same rate of speed, cutter2' will aocomplish its Work before cutter 75 reaches the cork slab. Abevel headed stud Z is placed on the floor, and another one m is placedon the under side of the bar g in such relation that at the momentcutter?) has accomplished its work, bar will be raised so that shoulderhwill escape through the slot of arm 6 so as to be no longer pushed bysaid arm, when a coiled spring p connected to arm 0 of stock f will pullsaid stock back and withdraw cutter '5, while cutter It continues itsforward movement and accomplishes its work, after which the attendantreleases the foot treadle and spring f reverses stock 0, and rod on,also, until it is stopped against standard it, by which it ejects thecork shell from cutter is, and is again reset, preparatory to pressingup the cork slab and holding it on the face of the die, when stock a ismoved forward again.

I claim- 1. In a cork shell cutting machine, the combination of thestationary disk, the cutter of the exterior of the shell, the corkpresser located in and movable lengthwise relatively to said cutter, andmeans to actuate the presser, the core cutter located on the other sideof the stationary disk relatively to the exterior cutter and the corkpresser, and acting against said presser, and means to actuate thepresser, core cutter, and the cutter of the exterior of the shellsubstantially as described.

2. In a cork-shell-cutting machine, the combination of the stationarydisk, supported on the bed-frame in an intermediate position, the hollowrotating cylindrical core cutter mounted on a sliding stock at one sideof said disk, the hollow rotating cylindrical cutter of the exterior ofthe cork mounted on asliding stock at the other side of said disk, thepresser located and adapted to slide in the bore of said exteriorcutter, and means to actuate the 75 presser, core cutter and theexterior cutter, substantially as described.

3. In a cork-shell-cutting machine, the combination of the stationarydisk, supported on the bed-frame in an intermediate position, the hollowcylindrical core cutter mounted on a sliding stock at one side ofsaiddisk, the hollow cylindrical cutter of the exterior of the corkmounted on a sliding stock at the other side of said disk, the pusherlocated and adapted to slide in the bore of the said exterior cutter,the friction clamp, and the stop controlling the presser, and means toactuate the sliding stocks of the core cutter and the exterior cutter,substantially as described.

4. In a cork-shell-cutting machine, the combination ofthe stationarydisk, the core cutter mounted on a sliding stock at one side of saiddisk, the exterior cutter mounted on a sliding stock at the other sideof said disk, the foot treadle and mechanism connecting said treadle andsliding stocks in the relation whereby both cutters are actuated by thetreadle and the core cutter takes effect prior to the action of theexterior cutter, and means for tripping ,the connection of the corecutter and the treadle and reversing the core cutter in advance of theaction of the exterior cutter, substantially as described.

5. In a cork-shell-cutting machine, the combination of the stationarydisk, the core cutter mounted on a sliding stock at one side of saiddisk, the exterior cutter mounted on a sliding stock at the other sideof said disk, the treadle connected with the stock of the exteriorcutter, the slotted arm pendent from said stock, the push-bar connectedwith the stock of the core cutter and arranged in the slot of the saidpendent arm of the stock of the exterior cutter, and having the stopshoulder co-acting therewith, also the trip studs for releasing the pushbar from the arm, substantially as described.

In testimony that I claim the foregoing as my invention I have signed myname, in presence of two witnesses, this 28th day of April, 1893.

ADOLPH L. MITCHELL.

\Vitnesses:

W. J. MORGAN, S. H. MORGAN.

